a(n) = Sum_{k=0..n} binomial(5*n+1,6*k).

A387877

a(n) = Sum_{k=0..n} binomial(5*n+1,6*k).

Terms

    a(0) =1a(1) =2a(2) =463a(3) =9829a(4) =349525a(5) =11450531a(6) =350739488a(7) =11582386286a(8) =364760483725

External references